Alireza Askari did everything in his power to cover up the "cold-blooded murder" of Paria Veisi.
Paria Veisi, 37, was last seen on 12 April and was found dead a week later.
A man and a woman appear in court after the discovery of Paria Veisi's body in Cardiff.
Paria Veisi, from Cathays, was last seen at 15:00 BST on Saturday 12 April.
The body of Tomasz Waga was discovered in the street in Penylan, in January.
Two men were detained in Paris as part of inquiries into the death in Cardiff of Tomasz Waga.
A fourth man will face trial over the death of 23-year-old Tomasz Waga, who died in Cardiff.
